Move CopyOps to CopyRenderTask.

This also means copies are no longer part of OpList or GpuCommandBuffer.

Change-Id: I234de2c93ca13e069d7e4423a3c8b292be2eb500
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235831
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrTransferFromRenderTask.cpp b/src/gpu/GrTransferFromRenderTask.cpp
index 2b8cee4..3e6dfc5 100644
--- a/src/gpu/GrTransferFromRenderTask.cpp
+++ b/src/gpu/GrTransferFromRenderTask.cpp
@@ -24,8 +24,7 @@
     if (!fSrcProxy->isInstantiated()) {
         return false;
     }
-    flushState->gpu()->transferPixelsFrom(
+    return flushState->gpu()->transferPixelsFrom(
             fSrcProxy->peekSurface(), fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.width(),
             fSrcRect.height(), fSurfaceColorType, fDstColorType, fDstBuffer.get(), fDstOffset);
-    return true;
 }